Instead of just using Flurry until my first rabbit died, I used Burrow on CD, which let me get in another Dodge as well. Brought in second rabbit and Little Blue just in time for Apocalypse to go off and kill them both, with cockroach still alive in the background. I used Deepholm Cockroach (HH), Elfin Rabbit (SB), and Rabbit (SS), in case that makes a difference.